DESCRIPTION OF NEW SPECIES 169 



fifth ventral segment in the male is truncate at apex and unmodified on 

 the disk; in Udells Casey it is likewise truncate and unmodified, the 

 pubescence being of the usual character. Extricatus Casey is recognized 

 and properly placed from material taken at San Diego and Pasadena, in 

 this species the antennae are stouter and incrassate, and blackish in color, 

 except the second joint which is rufous or testaceous. The above variant 

 of niveicanthiw taken at Pasadena may be known as tincticornis, new sub- 

 species. 



Listrus elegantulus, new species. Form oblong-oval to oblong-ovate, 

 rather strongly convex. Color black, a feeble purpureo-aeneous lustre, 

 especially on the head and pronotum ; mouth pale, second joint of the 

 antennae rufo-testaceous, succeeding joints more or less rufo-piceous, 

 apical joints usually blackish ; tibiae dark rufo-piceous, tarsi more or less 

 rufous. 



Pubescence moderately long, abundant and cinereous in color; dark 

 areas of dark brownish hairs arranged as follows: Elytral maculation 

 conspicuous, basal fascia rather broad, usually narrowly interrupted at 

 middle by the albescent scutellum ; post-basal macula small at middle of 

 each elytron ; median fascia quite broad, edges irregular, extending some- 

 what along the suture anteriorly ; subapical fascia narrower, with edges 

 zig-zag, widening more or less on the suture to form a subrhomboidal 

 figure, and constricted at middle of each elytron almost to the point of 

 division ; apical maculae rather large, but variable as to size. Pronotal 

 central macula usually distinctly constricted at middle, basal lobe rather 

 larger than the apical, reentering lines not evident; lateral vittae more 

 or less obsolete or divided at middle. Central area of the head with 

 darkish hairs. 



Head somewhat transverse and wider than the pronotal apex, eyes 

 large and prominent ; front more or less broadly impressed, at times 

 apparently bi-impressed, a feeble median convexity behind the epistomal 

 base ; surface densely indentato-punctate ; sometimes the intervals are 

 smooth on the vertex and adjacent front where the punctures are rather 

 coarse, but anteriorly between the antennae they are more densely placed. 

 Antennae rather long and slender, feebly compressed toward base, apical 

 joints feebly incrassate; second joint longer than wide and rather 

 obconical ; third rather slender and cylindrical, about as long as the fourth 

 or second ; fourth more evidently compressed, obconico-subtriangular, 

 slightly prominent anteriorly toward apex; fifth slightly elongate, sub- 

 triangular, apical margin rather oblique, anterior border angulate, dis- 

 tinctly wider than the fourth or third, about equal in width to the eighth ; 

 sixth and seventh just a little narrower, less noticeably compressed, sub- 

 triangular and very slightly longer than wide ; eighth triangular in outline 



